This is the XGIMI Halo+ mobile projector. Compared to the standard XGIMI Halo, the XGIMI Halo+ projects a brighter image and has improved sound quality ^ ^ As long as you have Wi-Fi, you can project videos from YouTube and video apps. It has built-in speakers for comfortable use ^ ^ ■ "Auto Focus / XGIMI's Unique 4 Auto-Adjustment Functions" The Halo+ almost eliminates the stress of screen correction with its barely noticeable auto-focus, vertical and horizontal automatic keystone correction, automatic screen adjustment, and automatic obstacle avoidance. ■ "Built-in Large Capacity Battery" This mobile projector with a built-in battery is portable, and with this single unit, you can easily transform any place into a special space. ■ "Equipped with Harman/Kardon 5W x 2 Speakers" Enjoy powerful and rich audio. Movies, games, and music come alive with surprisingly clear and deep sound. Manufacturer XGIMI Halo+ Model WM03A Display Resolution 1920 x 1080 Maximum Display Resolution 1920 x 1080 Size 145 × 113.5 × 171.5mm Weight 1.6kg RAM 2GB Storage 16GB Projection Size 30~300 inches or more Condition There are some minor scratches due to use and storage, but operation has been confirmed and it can be used without any problems. I haven't had many opportunities to use it, and it has been stored at home. Everything in the photos is included. XGIMI Halo W M03A (DLP method, 800lm Full HD) Brand: XGIMI Projector Features: Portable, Pico Projection Method: DLP Brightness, Luminous Flux (lm): 800.0 lm Resolution: FullHD (1920 x 1080) Video Terminals: HDMI terminal, USB Projector Functions: HDR, Distortion Correction, Keystone Correction, Built-in Battery, Wi-Fi, Bluetooth, Speaker Equipped, 3D Compatible Smart TV OS: Android TV OS Weight (kg): 0.9 kg